DeWalt DWP849X Manual

Introduction

You have chosen a DeWALT tool. Years of experience, thorough product development and innovation make DeWALT one of the most reliable partners for professional power tool users.

Technical Data

The vibration and/or noise emission level given in this information sheet has been measured in accordance with a standardised test given in EN62841 and may be used to compare one tool with another. It may be used for a preliminary assessment of exposure.

The declared vibration and/or noise emission level represents the main applications of the tool. However if the tool is used for different applications, with different accessories or poorly maintained, the vibration and/or noise emission may differ. This may significantly increase the exposure level over the total working period.
An estimation of the level of exposure to vibration and/ or noise should also take into account the times when the tool is switched off or when it is running but not actually doing the job. This may significantly reduce the exposure level over the total working period.
Identify additional safety measures to protect the operator from the effects of vibration and/or noise such as: maintain the tool and the accessories, keep the hands warm (relevant for vibration), organisation of work patterns.

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal word. Please read the manual and pay attention to these symbols.

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.
Denotes risk of electric shock.
Denotes risk of fire.

General Power Tool Safety Warnings

Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE.
The term "power tool" in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless) power tool.

1. Work Area Safety
   1. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
   2. DO NOT operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
   3. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
2. Electrical Safety
   2. Power tool plugs must match the outlet. Never modify the plug in any way. DO NOT use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
   3. Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators.
      There is an increased risk of electric shock if your body is earthed or grounded.
   4. DO NOT expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
   5. DO NOT abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
   6. When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
   7. If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
3. Personal Safety
   1. Stay alert, watch what you are doing and use common sense when operating a power tool. DO NOT use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
   2. Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
   3. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.
   4. Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
   5. DO NOT overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
   6. Dress properly. DO NOT wear loose clothing or jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
   7. If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
   8. DO NOT let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.
4. Power Tool Use and Care
   1. DO NOT force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
   2. DO NOT use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
   3. Disconnect the plug from the power source and/ or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
   4. Store idle power tools out of the reach of children and DO NOT allow persons unfamiliar with the power tool or these instructions to operate the power tool.
      Power tools are dangerous in the hands of untrained users.
   5. Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool's operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
   6. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
   7. Use the power tool, accessories and tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
   8. Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces DO NOT allow for safe handling and control of the tool in unexpected situations.
5. Service
   1. Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

ADDITIONAL SPECIFIC SAFETY RULES
Safety Instructions and Warnings Common for Polishing and All Operations

1. This power tool is intended to function as a polisher. Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
2. Operations such as grinding, sanding, wire brushing or cutting-off are not recommended to be performed with this power tool. Operations for which the power tool was not designed may create a hazard and cause personal injury.
3. DO NOT convert this power tool to operate in a way which is not specifically designed and specified by the tool manufacturer. Such a conversion may result in a loss of control and cause serious personal injury.
4. DO NOT use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.
5. The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fly apart.
6. The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
7. The dimensions of the accessory mounting must fit the dimensions of the mounting hardware of the power tool. Accessories that DO NOT match the mounting hardware of the power tool will run out of balance, vibrate excessively and may cause loss of control.
8. DO NOT use a damaged accessory. Before each use inspect the accessory such as abrasive wheel for chips and cracks, backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires. If power tool or accessory is dropped, inspect for damage or install an undamaged accessory. After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this test time.
9. Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtrating particles generated by your operation. Prolonged exposure to high intensity noise may cause hearing loss.
10. Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpiece or of a broken accessory may fly away and cause injury beyond immediate area of operation.
11. Hold power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a "live" wire may make exposed metal parts of the power tool "live" and shock the operator.
12. Position the cord clear of the spinning accessory. If you lose control, the cord may be cut or snagged and your hand or arm may be pulled into the spinning accessory.
13. Never lay the power tool down until the accessory has come to a complete stop. The spinning accessory may grab the surface and pull the power tool out of your control.
14. DO NOT run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
15. Regularly clean the power tool's air vents. The motor's fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
16. DO NOT operate the power tool near flammable materials. Sparks could ignite these materials.
17. DO NOT use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.

FURTHER SAFETY INSTRUCTIONS FOR ALL OPERATIONS
Causes and Operator Prevention of Kickback
Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory's rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel's movement at the point of pinching. Abrasive wheels may also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

1. Maintain a firm grip with both hands on the power tool and position your body and arms to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken.
2. Never place your hand near the rotating accessory. Accessory may kickback over your hand.
3. DO NOT position your body in the area where power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel's movement at the point of snagging.
4. Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
5. DO NOT attach a saw chain woodcarving blade, segmented diamond wheel with a peripheral gap greater than 10mm or toothed saw blade. Such blades create frequent kickback and loss of control.

Safety Warnings Specific for Polishing Operations

1. DO NOT allow any loose portion of the polishing bonnet or its attachment strings to spin freely. Tuck away or trim any loose attachment strings. Loose and spinning attachment strings can entangle your fingers or snag on the workpiece.

Additional Specific Safety Instructions for Polishers

• Clean out your tool often, especially after heavy use.
  Dust and grit containing metal particles often accumulate on interior surfaces and could create an electric shock hazard.
• DO NOT operate this tool for long periods of time.
  Vibration caused by the operating action of this tool may cause permanent injury to fingers, hands and arms. Use gloves to provide extra cushion, take frequent rest periods and limit daily time of use.
• Air vents often cover moving parts and should be avoided.
  Loose clothes, jewellery or long hair can be caught in moving parts.
  
  We recommend the use of a residual current device with a residual current rating of 30mA or less.

Residual Risks
In spite of the application of the relevant safety regulations and the implementation of safety devices, certain residual risks cannot be avoided. These are:

• Impairment of hearing.
• Risk of personal injury due to flying particles.
• Risk of burns due to accessories becoming hot during operation.
• Risk of personal injury due to prolonged use.
• Risk of dust from hazardous substances.

Electrical Safety
The electric motor has been designed for one voltage only. Always check that the power supply corresponds to the voltage on the rating plate.

Your DeWALT tool is double insulated in accordance with EN62841; therefore no earth wire is required.

We recommend the use of a residual current device with a residual current rating of 30mA or less.
If the supply cord is damaged, it must be replaced only by DeWALT or an authorised service organisation.

Mains Plug Replacement (U.K. & Ireland Only)
If a new mains plug needs to be fitted:

• Safely dispose of the old plug.
• Connect the brown lead to the live terminal in the plug.
• Connect the blue lead to the neutral terminal.

No connection is to be made to the earth terminal.
Follow the fitting instructions supplied with good quality plugs. Recommended fuse: 13 A.

Using an Extension Cable
If an extension cable is required, use an approved 3–core extension cable suitable for the power input of this tool (see Technical Data). The minimum conductor size is 1.5 mm²; the maximum length is 30 m.
When using a cable reel, always unwind the cable completely.

Package Contents

The package contains:
1 Polisher
1 Auxiliary handle
1 Bale handle
2 Wool ingestion shields
1 180 mm hook and loop backing pad
1 180 mm hook and loop wool polishing pad
1 Instruction manual

• Check for damage to the tool, parts or accessories which may have occurred during transport.
• Take the time to thoroughly read and understand this manual prior to operation.

Markings on Tool

The following pictograms are shown on the tool:

	Read instruction manual before use.
	Wear ear protection.
	Wear eye protection.
	Always operate with two hands.

Date Code Position (Fig. A)
The production date code consists of a 4-digit year followed by a 2-digit week and is extended by a 2-digit factory code.

Description

Never modify the power tool or any part of it.
Damage or personal injury could result.

1. Speed control wheel
2. Variable speed trigger switch
3. Brush inspection cap
4. Spindle lock button

Intended Use
Your DWP849X heavy-duty polisher has been designed for polishing painted or unfinished metal, fiberglass, and composite surfaces in professional applications. Common examples of use include but are not limited to: auto/marine/RV/motorcycle detailing and finish correction, boat construction and repair, and metal or concrete finishing.
DO NOT use under wet conditions or in the presence of flammable liquids or gases.
These heavy-duty polishers are professional power tools.
DO NOT let children come into contact with the tool.
Supervision is required when inexperienced operators use this tool.

• Young children and the infirm. This appliance is not intended for use by young children or infirm persons without supervision.
• This product is not intended for use by persons (including children) suffering from diminished physical, sensory or mental abilities; lack of experience, knowledge or skills unless they are supervised by a person responsible for their safety. Children should never be left alone with this product.

ASSEMBLY AND ADJUSTMENTS

To reduce the risk of serious personal injury, turn tool off and disconnect tool from power source before making any adjustments or removing/installing attachments or accessories. Before reconnecting the tool, depress and release the trigger switch to ensure that the tool is off.

Auxiliary Handle (Fig. A)

Before using the tool, check that the handle is tightened securely.
An auxiliary handle is supplied with your tool and can be installed on either side of the gear case. This handle should be used at all times to maintain complete control of the tool.
A bale handle is also supplied with the DWP849X and can be used in place of the auxiliary handle.

Wool Ingestion Shields (Fig. A, B)
The wool ingestion shields are designed to reduce the amount of wool, dust, and debris that gets ingested by the motor during normal use.
Clean the shields as soon as you start to see buildup on the outside. To clean the wool ingestion shields:

1. Remove the mounting screw .
2. Slide the shield back toward the trigger end of the tool and lift it off.
3. Clean with soap and water and a soft bristle brush.
4. Replace the shield on the tool and tighten the mounting screw.

Spindle Lock Button (Fig. A)
NOTICE: To reduce the risk of damage to the tool, DO NOT engage the spindle lock while the tool is operating. Damage to the tool will result and attached accessory may spin off possibly resulting in injury.
In order to prevent the spindle of the tool from rotating while installing or removing accessories, a spindle lock button has been provided in the gear head of the machine.
To lock the spindle, depress and hold the lock button. NEVER DEPRESS THE SPINDLE LOCK BUTTON WITH THE TOOL RUNNING OR COASTING.

Attaching and Removing Polishing Pads (Fig. C1, C2)

To reduce the risk of serious personal injury, DO NOT allow any loose portion of the polishing bonnet or its attachment strings to spin freely. Tuck away or trim any loose attachment strings. Loose and spinning attachment strings can entangle your fingers or snag on the workpiece.
Polishing pads with a diameter of 180 mm may be used with the DWP849X.
NOTE: The DWP849X may use either type of polishing pad assembly described below.

To Attach Polishing Pad with Rubber Backing Pad (Fig. C1)

1. Engage the hexagonal hole in the rubber backing pad . Holding the clamp washer and rubber backing pad firmly together, place the assembly on the tool spindle .
2. Hold the spindle lock button while turning the rubber backing pad and clamp washer clockwise to thread them completely on the spindle. Tighten firmly by hand.
3. Fix the polishing pad onto the rubber backing pad.

To Attach Polishing Pad with Hook and Loop Backing Pad (Fig. C2)

1. Attach hook and loop foam or wool padto hook and loop backing pad , being careful to center the backing pad with the foam or wool pad.
2. Screw backing pad onto spindle , while depressing spindle lock button .

To Remove Pads
Turn the pads by hand in the opposite direction from normal rotation to allow lock button to engage spindle, then unscrew pads in normal direction for right-hand thread.

Prior to Operation

1. Be sure the polishing pad is mounted correctly.
2. Make sure the pad rotates in the direction of the arrows on the accessory and the tool.
3. Make sure any dirt is washed off the workpiece surface.

OPERATION

Instructions for Use

Always observe the safety instructions and applicable regulations.

To reduce the risk of serious personal injury, turn tool off and disconnect tool from power source before making any adjustments or removing/installing attachments or accessories. Before reconnecting the tool, depress and release the trigger switch to ensure that the tool is off.

• Apply only a gentle pressure to the tool. Do not exert side pressure on the backing pad.
• Avoid overloading. Should the tool become hot, let it run a few minutes under no load condition.

Proper Hand Position (Fig. D)

To reduce the risk of serious personal injury, ALWAYS use proper hand position as shown.

To reduce the risk of serious personal injury, ALWAYS hold securely in anticipation of a sudden reaction.
Proper hand position requires one hand on the auxiliary handle or the bale handle , with the other hand on the main handle .

Variable Speed Trigger Switch (Fig. A)
The variable speed trigger switch permits speed control from 0 to 3500 RPM.
To turn the tool on, squeeze the variable speed trigger switch . The farther you depress the variable speed trigger switch, the faster it will operate. Releasing the trigger turns the tool off.
Use lower speeds for applying liquid waxes and polishes and higher speeds for removing dried liquid.

Trigger Locking Button
The tool can be locked on for continuous use by squeezing the variable speed trigger switch fully and depressing the lock button shown in Fig. A. Hold the lock button in as you gently release the variable speed trigger switch.
To turn the tool off from a locked-on position, squeeze and release the variable speed trigger switch once. DO NOT unplug the tool with the switch in the locked-on condition. Make sure the tool is not locked on when plugging in.
NOTE: The variable speed trigger switch can only be locked on with the tool running at the maximum RPM designated by the speed control wheel .

No-Volt Release
The variable speed trigger switch has a no-volt release function. In the event of a power outage or other unexpected shut down, the variable speed trigger switch needs to be cycled (depress the variable speed trigger switch, release, then depress again) to restart the tool.
DO NOT unplug the tool with the variable speed trigger switch in the locked-on condition. Make sure the tool is not locked on when plugging in. If the tool is plugged back in with the variable speed trigger switch in the locked-on position, the tool will not run until the variable speed trigger switch is cycled as described above.

Speed Control Wheel (Fig. A)
The maximum speed of your tool can be changed by rotating the speed control wheel to the desired setting. For added versatility, the variable speed trigger switch may be locked in its full on position and tool speed changed by means of the speed control wheel alone.
The speed control wheel can be set for any speed between 600 and 3500 RPM and the variable speed trigger switch will then control tool speed from zero to the wheel setting. For example: A control wheel setting of 2200 RPM will allow the variable speed trigger switch to operate the tool between zero and 2200 RPM, depending on how far the variable speed trigger switch is depressed.

Electronic Speed Control
The electronic speed control feature functions whenever the variable speed trigger switch is fully depressed and the tool is running at the selected speed determined by the setting of the control wheel.
As you load the tool by pushing it down on the work surface, the tool will compensate for the loading and maintain the selected speed. If the speed selected by the control wheel is 2200 RPM, the tool will maintain 2200 RPM, as it is loaded.

• The electronic speed control operates only when the variable speed trigger switch is fully depressed.
• The effect of electronic speed control is much easier to observe at lower speed settings (2600 RPM and below), than at high speeds.

A conventional polisher running at a typical no-load speed of 2400 RPM slows down to about 2000 RPM under a polishing load. Your DWP849X will continue to run at 2400 RPM (or any speed you select with the control wheel) as a load is applied. If the speed is too great, slow the tool down with either the trigger switch or the control wheel.

Polishing (Fig. D)

1. Without turning the tool on, grasp the handles of the tool and pick it up.
2. Keep the tool away from your body and depress the trigger switch.
3. Make sure you have a firm grip on the handles.
4. Move the tool evenly over the surface of the workpiece, without applying pressure.
5. Switch off the machine before taking the tool from the surface.
6. Check your work at short intervals.
   The auxiliary handle or the bale handle can be easily changed to either side of the tool for left-handed or righthanded operation.
   Use utmost care when power polishing around or over sharp objects and contours. It is very important to use the correct pressure while polishing various sections of an automobile body. For example, light pressure should be applied when polishing over sharp edges of body panels, or over edges of the rain gutter along the top. bonnet upon the workpiece surface can build a static
   
   High-speed rubbing action of the polishing charge on the metal portions of this tool resulting in a static shock when touched.

MAINTENANCE

Your DeWALT power tool has been designed to operate over a long period of time with a minimum of maintenance. Continuous satisfactory operation depends upon proper tool care and regular cleaning.

To reduce the risk of serious personal injury, turn tool off and disconnect tool from power source before making any adjustments or removing/installing attachments or accessories. Before reconnecting the tool, depress and release the trigger switch to ensure that the tool is off.

Lubrication
Your power tool requires no additional lubrication.

Cleaning

Electrical shock and mechanical hazard.
Disconnect the electrical appliance from the power source before cleaning.

To ensure safe and efficient operation, always keep the electrical appliance and the ventilation slots clean.

Never use solvents or other harsh chemicals for cleaning the non-metallic parts of the tool. These chemicals may weaken the materials used in these parts. Use a cloth dampened only with water and mild soap. Never let any liquid get inside the tool; never immerse any part of the tool into a liquid.
Ventilation slots can be cleaned using a dry, soft non-metallic brush and/or a suitable vacuum cleaner. DO NOT use water or any cleaning solutions. Wear approved eye protection and an approved dust mask.

Motor Brushes (Fig. A)
Carbon brushes should be regularly inspected for wear.

• Be sure tool is unplugged.
• Unscrew the plastic brush inspection caps (located in the sides of the motor housing) and withdraw the spring and brush assemblies from the tool.
• Keep brushes clean and sliding freely in their guides.
• When the brushes are worn down to the line closest to the spring, they must be replaced.

Optional Accessories

Since accessories, other than those offered by D e WALT, have not been tested with this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury, only D e WALT recommended accessories should be used with this product.
To reduce the risk of injury, only DeWALT recommended accessories should be used with this product. Consult your dealer for further information on the appropriate accessories.